user
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Reverse engineer the following code snippet to write a descriptoin of what it does.

### Input:
int mystery_function(int x, int y)
{
  if (x == 0 && y == 0)
    return 0;
  else if (x == 0 || y == 0)
    return 1;
  else 
    return x + y;
}

### Response:
assistant
This function takes two ints as arguments, x and y. If both x and y are equal to 0, it will return 0; if either x or y is equal to 0, it will return 1; otherwise, if both x and y are not equal to 0, it will return the sum of x and y.